Additional Services include injection molding and fabrication                                                                                                    


Injection molding involves heating plastic to high temperatures sometimes in
excess of 600 degrees and forcing the liquid plastic under extreme pressure and
clamping force into a steel mold. The mold is then rapidly chilled and the part is
ejected all within seconds. Injection molding is the ultimate method for high volume
part production where complex geometry and high levels of 3D detail are required.

See  injection molding video




Depending on your requirements, literally thousands of materials can be injection molded. These range from polypropylene used for toys to ABS used in consumer electronics to nylon used for engineering grade applications to silicone used for high heat requirements. See our material selection guide to learn about some of the more common plastics.


         Advantages to injection molding

  • parts with complex geometry are easily achieved
  • cycle times are fast making parts cost effective
  • multiple parts made in one mold meets production demands multiple cavity or family mold
  • close tolerances are easily met sometimes under .001 of an inch








Fabrication and machining for our customers requiring low production or prototyping. We offer a complete machining facility. Our services extend to SLA (3D printing) and CAD model file capabilities. SRG can assist with design and engineering to insure high quality and cost effective parts.



Precision cutting     minimum 6 ” +/- .020
Machining     Prototypes or short run – no die or mold cost
Fabrication     Drilling routing punching notching mitering

Printing     One color random repeating image done inline
Foil     Done inline applies metallic colors or wood grain

Taping     Inline or offline application double sided tape
Special packaging     Consumer products – kitting

SLA modelling     Computer driven 3-D prototypes
CAD services     Full 2-D or 3-D drawing files







        Our capabilities

  • 75 – 600 ton molding machines
  • process a wide range of materials
  • 2 grams – 64 ounce shot weight
  • part design and CAD services
  • SLA modelling 3D printing
  • U.S. and offshore mold manufacturing
  • 24 hr / 7 day production

Special characteristics of injection molded parts

  • reinforced with glass or graphite – exhibits metal characteristics
  • resistant to extreme hot or cold -40 to 500F
  • resistant to caustic chemicals and UV exposure
  • low CLTE (co-efficient of linear thermal expansion) good for outdoor applications)
  • exhibits rubber like characteristics when using thermolplastic elastomers
  • anti-stat inhibitors
  • chrome plating for automotive applications


     For a guide to some common plastic materials see 
     material selection

     For a definition of plastic terms see plastic terms